Sound great anywhere with the Bose S1 Pro multi-position PA system. Designed for musicians, DJs, and general PA use, the S1 Pro is the ultimate all-in-one PA, floor monitor, practice amplifier, and primary music system. At 7.1 kg (15.7 lbs), the ultra-portable and rugged S1 Pro is lightweight and designed to transport effortlessly using the convenient carry handle or the optional S1 Pro Backpack accessory. Perform anywhere for hours with the S1 Pro using the lithium-ion rechargeable battery.